package com.example.framework.util;

import java.security.MessageDigest;

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;

/**
 * Utility Class Of Common.
 * @author renxin.sun
 *
 */
public class Util
{
	/**
	 * 
	 * @param string
	 * @return
	 */
	public static String MD5(String string)
	{
		MessageDigest md5 = null;
		try
		{
			md5 = MessageDigest.getInstance("MD5");
		}
		catch (Exception e)
		{
			System.out.println(e.toString());
			e.printStackTrace();
			return "";
		}
		char[] charArray = string.toCharArray();
		byte[] byteArray = new byte[charArray.length];

		for (int i = 0; i < charArray.length; i++)
			byteArray[i] = (byte) charArray[i];

		byte[] md5Bytes = md5.digest(byteArray);

		StringBuffer hexValue = new StringBuffer();

		for (int i = 0; i < md5Bytes.length; i++)
		{
			int val = ((int) md5Bytes[i]) & 0xff;
			if (val < 16)
				hexValue.append("0");
			hexValue.append(Integer.toHexString(val));
		}

		return hexValue.toString();
	}

	/**
	 * 
	 * @param context
	 * @return
	 */
	public static boolean isConnectedNetwork(final Context context)
	{
		try
		{
			ConnectivityManager manger = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);

			NetworkInfo info = manger.getActiveNetworkInfo();
			return (info != null && info.isConnected());
		}
		catch (Exception e)
		{
			return false;
		}
	}

}
